:root {
    --bg-color: #0d0d0d;
    --text-color: #ffffff;
    --accent-color: #00e5ff; /* Cyan for electric vibe */
    --accent-hover: #00b8cc;
    --secondary-bg: #1a1a1a;
    --card-bg: #262626;
    --font-main: 'Inter', system-ui, -apple-system, sans-serif;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-main);
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    display: block;
}

/* Utilities */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.btn {
    display: inline-block;
    padding: 12px 24px;
    background-color: var(--accent-color);
    color: #000;
    font-weight: 600;
    border-radius: 4px;
    cursor: pointer;
    border: none;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn:hover {
    background-color: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 229, 255, 0.4);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 3rem;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background-color: var(--accent-color);
    margin: 10px auto 0;
}

/* Header */
header {
    background-color: rgba(13, 13, 13, 0.95);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    min-height: 120px;
}

.logo-placeholder {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: 2px;
    color: var(--accent-color);
}

.logo-img {
    height: 140px;
    width: auto;
    display: block;
    object-fit: contain;
}

.main-nav ul {
    display: flex;
    gap: 30px;
}

.main-nav a {
    font-size: 0.9rem;
    font-weight: 500;
    text-transform: uppercase;
    opacity: 0.8;
}

.main-nav a:hover {
    opacity: 1;
    color: var(--accent-color);
}

.header-actions {
    display: flex;
    gap: 20px;
}

.nav-toggle {
    display: none;
}

.header-icon {
    font-size: 1.2rem;
    cursor: pointer;
}

.header-icon:hover {
    color: var(--accent-color);
}

/* Hero Section */
.hero {
    height: 90vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: linear-gradient(rgba(0,0,0,0.6), rgba(0,0,0,0.6)), url('./hero_gt.webp');
    background-size: cover;
    background-position: center;
    position: relative;
}

.hero-content h1 {
    font-size: 4rem;
    font-weight: 800;
    margin-bottom: 20px;
    line-height: 1.1;
    text-transform: uppercase;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 40px;
    opacity: 0.9;
}

/* Features Band */
.features-band {
    background-color: var(--secondary-bg);
    padding: 40px 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    text-align: center;
}

.feature-item h3 {
    color: var(--accent-color);
    margin-bottom: 10px;
}

/* Categories Grid */
.categories {
    padding: 80px 0;
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.category-card {
    background-color: var(--card-bg);
    height: 400px;
    border-radius: 12px;
    overflow: hidden;
    position: relative;
    transition: var(--transition);
}

.category-card:hover {
    transform: scale(1.02);
}

.category-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.7;
    transition: var(--transition);
}

.category-card:hover img {
    opacity: 0.4;
    transform: scale(1.1);
}

.category-content {
    position: absolute;
    bottom: 30px;
    left: 30px;
    z-index: 2;
}

.category-content h2 {
    font-size: 2rem;
    margin-bottom: 10px;
    text-transform: uppercase;
}

/* On Top Section (Carousel Placeholder) */
.on-top {
    padding: 80px 0;
    background-color: var(--secondary-bg);
}

.product-slider {
    display: flex;
    gap: 30px;
    overflow-x: auto;
    padding-bottom: 40px;
    scrollbar-width: none; /* Firefox */
}

.product-slider::-webkit-scrollbar {
    display: none;
}

.product-card {
    display: block;
    min-width: 280px;
    background-color: var(--bg-color);
    border-radius: 8px;
    padding: 20px;
    transition: var(--transition);
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

.product-image {
    height: 200px;
    background-color: #333;
    border-radius: 4px;
    margin-bottom: 20px;
    background-image: url('https://images.unsplash.com/photo-1558981403-c5f9899a28bc?auto=format&fit=crop&q=80');
    background-size: cover;
    background-position: center;
}

.product-title {
    font-size: 1.1rem;
    margin-bottom: 10px;
}

.product-price {
    color: var(--accent-color);
    font-weight: 700;
    font-size: 1.2rem;
}

/* Video Section */
.video-section {
    padding: 80px 0;
    text-align: center;
}

.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 40px;
}

.video-placeholder {
    aspect-ratio: 16/9;
    background-color: #333;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: rgba(255,255,255,0.5);
    border-radius: 12px;
    border: 1px solid rgba(255,255,255,0.1);
}

/* Video cards with thumbnail preview */
.video-card {
    display: block;
    text-decoration: none;
}

.video-thumb {
    position: relative;
    aspect-ratio: 16/9;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid rgba(255,255,255,0.12);
    background: #111;
}

.video-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    filter: brightness(0.85);
    transform: scale(1.01);
}

.video-play {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.video-play i {
    font-size: 44px;
    line-height: 1;
    color: #fff;
    background: rgba(0,0,0,0.55);
    border: 1px solid rgba(255,255,255,0.25);
    border-radius: 999px;
    padding: 18px 22px;
}

.video-caption {
    margin-top: 14px;
    font-weight: 700;
    font-size: 1.1rem;
    color: rgba(255,255,255,0.9);
}

.video-card:hover .video-thumb img {
    filter: brightness(0.95);
    transform: scale(1.03);
    transition: 220ms ease;
}

.video-card:hover .video-play i {
    background: rgba(0,0,0,0.7);
    transition: 220ms ease;
}

/* Blog Highlights */
.blog-section {
    padding: 80px 0;
    background-color: var(--secondary-bg);
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.blog-card {
    background-color: var(--bg-color);
    border-radius: 8px;
    overflow: hidden;
}

.blog-img {
    height: 200px;
    background-color: #444;
}

.blog-content {
    padding: 20px;
}

.blog-meta {
    font-size: 0.8rem;
    opacity: 0.6;
    margin-bottom: 10px;
}

/* About Block */
.about-block {
    padding: 100px 0;
    text-align: center;
}

.mission-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    margin-top: 50px;
}

.mission-item h3 {
    margin-bottom: 20px;
    font-size: 1.5rem;
    color: var(--accent-color);
}

/* Footer */
footer {
    background-color: #050505;
    padding: 80px 0 40px;
    border-top: 1px solid rgba(255,255,255,0.05);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    margin-bottom: 60px;
}

.footer-col h4 {
    margin-bottom: 25px;
    font-size: 1.1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.footer-col ul li {
    margin-bottom: 15px;
}

.footer-col ul li a {
    opacity: 0.6;
}

.footer-col ul li a:hover {
    opacity: 1;
    color: var(--accent-color);
}

.copyright {
    text-align: center;
    opacity: 0.4;
    font-size: 0.9rem;
    padding-top: 40px;
    border-top: 1px solid rgba(255,255,255,0.05);
}

@media
/* Responsive */
 (max-width: 1024px) {
  .nav-container { min-height: 96px; }
  .main-nav ul { gap: 18px; }
  .hero-content h1 { font-size: 3.2rem; }
  .video-grid { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }
  .blog-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

 (max-width: 900px) {
  .container { padding: 0 16px; }
  .nav-container { position: relative; min-height: 86px; }
  .logo-img { height: 100px; }

  .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    border-radius: 10px;
    border: 1px solid rgba(255,255,255,0.14);
    background: rgba(255,255,255,0.06);
    color: var(--text-color);
    cursor: pointer;
  }
  .nav-toggle:hover { border-color: rgba(0,229,255,0.35); color: var(--accent-color); }

  .main-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    padding: 14px 16px 18px;
    background: rgba(13, 13, 13, 0.98);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255,255,255,0.1);
  }
  header.nav-open .main-nav { display: block; }
  .main-nav ul {
    flex-direction: column;
    gap: 12px;
  }
  .main-nav a {
    display: block;
    padding: 10px 12px;
    border-radius: 10px;
    background: rgba(255,255,255,0.04);
    opacity: 1;
  }

  .header-actions { gap: 12px; }
}

 (max-width: 600px) {
  .hero { height: auto; padding: 72px 0 56px; }
  .hero-content h1 { font-size: 2.2rem; }
  .hero-content p { font-size: 1rem; margin-bottom: 26px; }

  .features-band { padding: 26px 0; }
  .features-grid { grid-template-columns: 1fr; gap: 18px; }

  .categories { padding: 56px 0; }
  .category-grid { grid-template-columns: 1fr; }
  .category-card { height: 320px; }
  .category-content { left: 18px; bottom: 18px; }

  .on-top, .video-section, .blog-section { padding: 56px 0; }
  .video-grid { grid-template-columns: 1fr; }
  .blog-grid { grid-template-columns: 1fr; }

  .mission-grid { grid-template-columns: 1fr; gap: 22px; }
  .footer-grid { grid-template-columns: 1fr; }
}